ACKNOWLEDGMENTS
This research was funded by University Grants Commission, Nepal (Award No. Ph.D./74_75/S&T–17). We thank Professor Dr. Vasant Kumar Thapa, Professor Dr. Bhaiya Khanal (Natural History Museum, Nepal), and Mr. Muhammad Asghar Hassan (China Agricultural University, Beijing, China) for the identification of pollinators. The first author is grateful to Mr. Bishnu Maharjan for guiding to prepare a map in Arc GIS. The first author also thanks all the students who supported in fieldwork. The first author is also grateful to the Department of National Parks and Wildlife Conservation, Nepal for providing permission for the collection of insects.